Stove



Dec. 21, 1937. p FQRSTER 2,102,893-

STOVE Filed Sept. 15, 1936 v 2 Sheets- Sheet 1 Fig.1.

INL'ENTOR. P520 Y M Foe STE/Q A TTORNE Y Dec. 21, 1937. I ER 2,1@2,$93

STOVE Filed Sept. 15, 1956 2 Sheets-Sheet 2 INVENTOR.

PERCY M .Fxesrea MM a A TTORNE Y Patented Dec. 21, 1937 UNITED STATES PATENT OFFICE 5 Claims.

My invention relates to improvements in stoves. Where stoves are being used in localities where gas is not piped, it is possibleto procure various kinds of gases compressed in tanks. This fuel is similar to gas which is available in cities and makes it possible to use stoves equipped for burning gas on construction projects and under other conditions where piped fuel is unavailable. However, conditions frequently arise which make it impossible always to have'a supply of this fuel on hand and it becomes necessary to burn wood or coal until more compressed gas or natural gas can be supplied. This in the past has resulted in it being necessary to have two sets of stoves, one

which used gas; the other, wood or coal. By means of my invention I have devised a portable combination gas or wood burning stove which, when the gas supply'is exhausted for one reason oranother, the stove can then be used as a wood or coal stove. This has been found to be of particular advantage in railroad construction camps, army camps, and other situations where groups of men are located for extended periods of time away from towns or cities and where fuel .is readily available. It is necessary from a health standpoint that adequate heating facilities be available. This is true in army camps, for instance, where the regulations require that dishes must be washed in very hot water and then rinsed twice in clear boiling water.

One object of my invention is to provide a portable combination stove of rugged construction and adapted to use in a fiat position when set directly on the ground. I

Another object of my invention is to provide a portable combination wood-gas stove in which the flat bottom surface of the stove is adapted to be sealed by the ground, when used as a gas stove. When it is to be used for wood or coal, a small hole dug in the ground will serve as an ash pit.

It is also an object of my invention to provide a portable stove which may use either wood, coal or gas as a fuel.

It is a further object of my invention to provide a stove of rugged construction adapted to stand rough use.

A further object of my invention is to provide a stove in which the side walls have provision to allow expansion at their joints.

Other objects of myinvention will appear from the following description.

In the drawings forming a part hereof;

Fig. 1 is a perspective view of a stove embodying my invention;

Fig. 2 is a perspective view partially broken away with the gas burner removed;

Fig. 3 is a view showing the cover plate used. when the stoveis operated by gas;

Fig. 4 is a view of the gas burner assembly; 5'

Fig. 5 is a plane view looking down on the. I stove;

.Fig. 6 is a side elevational view taken ,on the line 6-6 of Fig. 5; and

Fig. '7 is a partial side elevational view taken on 10 line 1-1 of Fig. 5; and v Fig. 8 is a sectional elevational view showing the stove arranged for burning wood.

Referring to the drawings, the stove consists. of base plate l0, upright angle members ll, side pieces I 2, top angle plate l3, and supporting members l4.

Base plate l0 has cut out section l5 in which are located bars l6. Angle iron member l1 surrounds cut out portion I6 on three sides and fiat piece I8 is located on the fourth side of, this opening. Burner holder IS, in which is located bolt hole I9, is attached to base plate I0 near the opening as shown in Figs. 1 and 2. Slot 20 is located in the vertical wall of angle iron member I! as shown. Upright members ll support top plate l3 to which is attached supporting members. l4.

Wall sections I2 are designed to overlap on their ends to allow for heat expansion. Each wall member I2 is attached to an upright member l and consists of flat portion 2| and bent end piece 22. Referring to the drawings, Figs. 1 and 5, it will be seen that the right hand edge of each wall member'l2 can slide within the bent over portion 22 on the next adjacent wall member l2. Thus, when the stove is in operation, and heat expansion takes place, these side wall members can slide a little, one against the other, which obviates any heat distortion effects. Attachedto top plate 40 I3 are vessel supporting members l4. These members have a top part 23, on which rests the vessel containing water or anything else to be heated by the stove. Downward depending portion 24 serves to brace horizontal part 23 of these vessel supporting arms l4 sothat they can carry a great deal of weight. 1

As shown in Fig. 1, one of the side wall pieces I 2 is omitted to leave an opening 25. This opening is used to slide the gas burner in and out of the stove when it is desired to change from using gas to wood as a fuel.

When the stove is operated by gas this opening 25 is closed by plate 26 which is shown in Fig. 3. This plate 26 has an opening 21 through which ill may fit the gas hose attached to the burners. It is held in position when the stove is being used as a gas stove by being bolted to top member I3 by means of bolts passing through holes 28 in cover plate 26 and holes 28" in top' piece 63 of the stove. When the stove is burning wood this plate member is not used.

Referring to Fig. 4, the gas burner assembly is shown which comprises supporting plate 30 to which is attached burner assembly 3| and air regulating member 32. Attached to this burner assembly is the hose 33 which supplies fuel from a tank (not shown). Attached to base member 30 is upright piece 34 in which is located bolt hole 35. Supporting plate 30 is tapered at one end as at 36. This burner assembly may be of any of the known types. 7

When this stove is operated by gas, burner assembly 30 is placed as shown in Figs. 1 and 5. This is accomplished by slipping the tapered end 36 of base plate 30 into slot 29 located in angle member IT. This assembly is held in place by being screwed to burner holder l9 as shown in Figs. 1, 3, and 5; In Fig. 5 the securing means is shown in the form of a snap fastener 29 which is easily removed. Plate 26, Fig. 3, is then placed over opening 25 and held in place by means of bolts passing through holes 28 in the plate and holes 28' in member l3 of the stove. to cover the opening 25 and keep uneven drafts from blowing on the flame. Air necessary for the flame enters between the bottom of side plates l2 and base plate [0. As the stove heats during the course of its operation, side plates [2, due to their construction, as previously explained, are allowed to slide endways one against the other to allow for expansion as a result of heat.

When wood or coal is used as fuel, plate 26 and the gas burner assembly are removed. The stove is then placed over a trough 9 dug in the ground as shown in Fig. 8. The wood fire is laid and opening I5 in the base plate It! and bars l6 serve as a grate. Additional fuel is placed on the fire through opening 25. The flat bottom It! lends itself well to this utilization of a pit 9'dug in the ground for an ash receptacle.

As the fire burns, ashes fall between grate bars 16 into the trough 9 under the stove. In this manner it is possible to keep supplying the stove with new fuel so as to get its maximum efliciency since no waste ashes will be retained in the grate. As previously explained, side plates l2 expand without any buckling, since there is a slide joint at the ends of each of these plates. This is particularly important when wood is being burned in the stove as the flame is not as concentrated as it is when a gas burner is being used, and results in the side plates I 2 becoming extremely hot. I

I have found that it is possible with this construction to burn a great deal of fuel and get an efficient flame when burning coal or wood.

It can be readily seen by this description that I have invented a stove having novel features of construction which may be used either as a gas or a wood burning stove. 7

It is to be understood that the form of my invention, herewith shown and described, is to be taken as a preferred example of the same, and that various changes in the shape, size and arrangement of parts may be resorted to, without This serves gether the top and bottom in. spaced relation,

and a plurality of wall sections, each adapted to overlap on its ends with the next adjacent sections and each wall section secured only to one supporting member, whereby said sections may move freely on one another as they expand or contract under the influence of the heat.

2. A combination wood and gas stove comprising a substantially flat base, having a central cut out portion therein and bars fastened across said opening, a substantially flat centrally apertured top member, and vessel supporting means in cooperative relationship with said top member, a plurality of supporting members securing together the top and'bottom in spaced relation, and a plurality'of wall sections, each adapted to overlap on its ends with the next adjacent sections and each wall section secured only to one supporting member, whereby said sections may move freely on one another as they expand or contract under the influence of the heat.

3. A combination wood and gas stove comprising a substantially flat base, having a central cut out portion therein and bars fastened across said opening, a substantially flat centrally apertured top member, a pluralityof supporting members securing together the top and bottom in spaced relation, and a plurality of wall sections, each adapted to overlap on its ends with the next adjacent sections and each wall section secured only to one supporting member, whereby said sections may move freely on one another as they expand or contract under the influence of the heat. 4. A combination wood and gas stove comprising a substantially flat base, having a central cut out portion therein and bars fastened across said opening, a substantially flat centrally apertured top member, and vessel supporting bars extending inwardly a short distance from'the sides, supporting means securing together the top and bottom in spaced relation, and a plurality of wall sections, each adapted to overlap on its ends with the next adjacent sections and each wall section secured only to said supporting means along a portion only of its surface, whereby said sections may move freely on one another as they expand or contract under the influence of the heat;

5. A combination wood and gas stove comprising a substantially flat base, having a central cut out portion therein and bars'fastened across said opening, a substantially flat centrally apertured top member, supporting means securing together the top and bottom in spaced relation, and a plurality of wall sections, each adapted to overlap on its ends with the next adjacent sections and each wall section secured only to said supporting means along a portion only of its surface, whereby said sections may move freely on one another as they expand Orcontract under the influence of the heat.

' PERCY M. FORSTER. 

